Note-sheet-guide mechanism.



PATENTBD JULY 16, 1907.

. F. W. WOOD.

NOTE SHEET GUIDE MEOHANISM.

:APPLICATION FILED AUG. 25. 190e.

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, Unirse PLAYER GO., OF KANSAS CITY, MISSOURI ebters Patent. lamented July 16, 1.907.

duplication filed August @5,1906. Serial No. 231,968

To all whom it may concern:

Be it known that 1, Funnnnicn Woon, a citizen ofthe United States, residing at Kans-us City, in the county of Jackson and State oi Missouri, have invented certain new and useful lmprovements in NoteSl1cet- Guide Mechanisms, ot' which the following,l is a speci Iication.

This invention relates to automatic piano playing mechanism and more particularly to that type provided with means to automatically shifting the noto sheet laterally'in case it tends to creep in the opposite direction and thus result in imperfect tracking with the tracker bar, and my object to produce mechanism' of this character which will operate ellcicntly and reliably and which is of simple, durable, compact and inexpensive construction. To this end the invention consists in certain novel and peculiar features of construction and organization of parts as hereinafter described and claimed; and in order that it may be fully understood, reference is to be had to the accompanying drawing, in Which-1 Figure 1, isa vertical section taken substantially on the line 1-1 of Fig. 2. Fig. 2, is a top plu-n vier." of the same. Figu, a vertical section oi one side oi 'the frame to illustrate the connection between certain parts. Fig. 4, is o. vertical section .oi a portion of the tracker bar. Fig. is a perspective view ol a slide forming a part of the tracker bar. Fig. (l, is a side view of a screwior adjusting the slide. Y

In the said drawing, l indicates a suitable frame, 2 rollsjou'rn'aled therein and adapted to be suitably driven and Il, and 5 guide rollers for the noto sheet 6, which is adapted to be moved in the dicated by the arrow' Fig. 1, through i pressure applied thereon by the rolls tracker bar carried by the frame and disposed preferably between rollers 4 and 5, lor engagement with the note sheet, only a pair o i the tracker bar openings 8 being` shown and none of the openings of the note sheet, and ,connected to said openings of the tracker bar are tubes 9 for connection in the usual manner with the player' mechanism not shown.

10 and 11 indicate outer and inner openings in the tracker bar and connected to said openings respectively are tubes l2 and '13. The-opposite ends oi' said openings respectively communicate with openings 14 and l5 in the slide 16 arranged to be loncitudinally adjusted slide 1U and ahead io engage groove 18. By this arrangenient it-will be sccn iliat when the screw is turned in one direction or the other it will through the swivel relation dc bed impart longitudinal movement to the slide, the object oi such movement beinlbr to allow for longitudinal expansion or contraction of the noto sheet so that 'the latter when tracking perfectly with the tracker' bar shall efiectually cover the inner openings 11i and thus prevent air irorn passing therethrough,

indicates a tube extending from tube l2 of the tracker bar to the tube 2 ol a valve casing, said lastnamed tube communicating with the chamber of said casina' and through the vent hole 2G with the suction chamber 27 ot said casing.

23 is flexible diaphragm adapted to be normally expanded into chamber 27 by the pressure of air which passes through openings 14 and 10 and tubes l2, 23 and 24.

29 is an opening connecting chamber: 27 and 30 of the casing, and `3l an opening connecting chamber 30 wi th the atmosphere.

32 isa snit-ably guided valve stern normally held elevated by the expansion oi diaphragm 2S, and 33, 34 valves, secured to said stein and normally respectively above opening 3l and below casing opening 29, so that air may pass through opening 3l into chamber BO'and thence through tube 35 to a pneumatic 36 equipped with a forked arin 37 pivot-ed as at 38 to a ring 39, jour-y naled in a groove Al() of o. conical roller 41 mounted slidingly ou a shaft 42 carried by the arm 4? o. the

frame. t

A second valve casing oi substantially the saine construction as that described and correspomlingly numbered, has itsj'alvc stem provided with only a single valve 44 arranged within chamber 30 0i the casing and normally held down on and closing opening; 29 by atmospheric pressure and the suction exerted in cham-` ber o7 the lower chamber' 25 of said valve casing being connected by a tube Ll5 corresponding to tube 23 to the tube 1.3, connected to opening 15 whichis normally covered by the not sheet as hercinbelnue exlduined, :ind the chamber oi the second valve casing is also connected by tube to a similar penumatie 3G equipped with conical loller 41, as hereinbefore explained, and as shownin the drawing. The conical rollers are preferably longitudinally alined and have their small ends lapping the note sheet, preferably at its under side as shown.

In practice as long :is the note sheet is tracking per-l ectly with the 'tracker bar the pneuxnatics are inliated andthe conical rollers disposed about as shown clearly in'Fig. 2, so as'not to interfere with the operation ol iin; fihili lY ingr@- rm Clau Lhl; o

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